การศึกษาโครงการ การออกแบบและสร้างชุ

The study project to design and build a series of low-speed wind tunnel experiment with open. The objective is to design and build a series of low-speed wind tunnel experiment and open to find the performance of a series of low-speed wind tunnel experiment is an open project, which is divided into two sections: design and build a wind tunnel and measuring instruments, and strong resistance by the wind tunnel that is created. With the test (Test section) width x height x 292 x 292 x length 480 mm, internal flow simulation and wind tunnel with a computer program. From the test, find the performance of a series of experimental wind tunnel test of speed distributions inside the test Chamber by a change of wind speed, 10.2, 15.3, 18.3 m/s, 20.3, 22.9 from trials. Concluded that the wind speed of 2 m/s with the distribution of the rooms within the speed test does not consistently. Which are not suitable for testing the model, but when you add up the motor, frequency distributions, trends, the same speed throughout the plane speed 10.2, 15.3, 18.3, m/s 20.3 22.9, suitable for the model test study on resistance measuring instrument and object of strong design measurement tools?And there is a strong resistance measuring range equal to 10 N test performance of resistance measurements and tools, lifting force by comparing the coefficient of resistance and force, lifting it from the measuring instrument with the theory with a round shape pan and cylinder air NACA2418 by test at a speed of 8, 10, 12, 14, 16, 1.8, 20, 22 m/s from the experimental results. It found that the resistance coefficient from measurement instrument of the sphere is equal to the average of 0.48, which is theoretically equal to 0.49 and pan-shaped air NACA2418 0.097 average, which theoretically equal to 0.1 and cylindrical average 0.75, which theoretically equal to 1.01 concluded that resistance measuring instruments, and strong, can read the resistance coefficient and lift force closer to theory.

Education project Design and build experimental low-speed wind tunnel open. The objective is to design and build a series of low-speed wind tunnel experiments open. And to the performance of low-speed wind tunnel experiments open. The project is divided into two parts: design and build a wind tunnel. And tracking resistance and lift force. The wind tunnel is built Size Test (Test section) width x height x length equal to 292 x 292 x 480 mm and flow simulation in a wind tunnel by a computer program. The test for a performance of experimental wind tunnel. By testing the velocity distribution within the chamber. The change in wind speed at 2, 10.2, 15.3, 18.3, 20.3, 22.9 m / s The results concluded that the wind speed 2 m / s velocity distribution of the inner chamber is not uniform. Which is not suitable to be put to the test model. But with increasing frequency motor speed is more likely to spread evenly throughout the plane. The speed at 10.2, 15.3, 18.3, 20.3, 22.9 m / s suitable for testing models. Studies measuring the resistance and lift objects. This tool is designed to measure resistance and lift force. With a measuring range of 10 N from the test for measuring the performance of resistance and lift force. By comparison, the coefficient resistance and lift force obtained by measuring the theoretical with the sphere airfoil NACA2418 and cylindrical test at a speed of 8, 10, 12, 14, 16, 18, 20, 22 m / s. the results showed that the coefficient of friction tester's sphere. Average of 0.48, which is theoretically equal to 0.49 and shaped airfoil NACA2418 average of .097, which is theoretically equal to 0.1 and cylindrical average of 0.75, which is theoretically equal to 1.01 conclude that measure resistance and lift force can be read coefficient resistance. and the lift was close to theoretical.

Education project. Design and construction of low speed wind tunnel experiment open. Objective to design and build a set of low speed wind tunnel experiment open. And to find out the performance of low speed wind tunnel experiment open. The project is divided into 2 parts. The design and construction of wind tunnel. Instrumentation and resistance and lift force by wind tunnel built a room size test (Test section) wide x high x long as 292 x 292 x 480 mm. Internal flow simulation and wind tunnel with a computer program. From the test performance of a series experimental wind tunnel. By testing the distribution of speed in a test room By changing the velocity of 2 10.2 15.3,,,,, 18.3 20.3 22.9 M / s from the experimental results, it can be concluded that the wind speed 2 m / S. The velocity distribution inside the test chamber is irregular. Which is not suitable to the test model. But when the increasing frequency motor up trend distribution speed rate across the plane by the speed 10.2 15.3 18.3,,,, 20.3 22.9 M / S. Suitable for the test model. Study of measuring resistance and lift force objects. The design of measuring resistance and lift force, with a range of measurement was 10 N. By testing the efficiency of measuring resistance and lift force. By comparing the coefficient of resistance and lift force obtained from measuring instruments with the theory with the sphere. NACA2418 pan and air cylinder. By testing the speed, 8 10 12 14,,,,,, 16 18 20 22 m / s experiments, it was found that the coefficient of friction of the measurement of the sphere. The average value of 0.48 which theory of 0.49 and shape slat NACA2418 average of 0.097 which theory of 0.1 and cylinder average. As 0.75 which theory of 1.01 conclusion. Instrument for measuring friction coefficient and lift force can read resistance and lift force is close to the theory.